GEOLOGY

Detailed explanation-1: -Ferromagnetic (for the purposes of this page, at least) means that they will align themselves with a magnetic field. That being the case, iron filings are an excellent way to display the magnetic field of one or multiple bar magnets.

Detailed explanation-2: -Sprinkle iron filings on a piece of paper over two magnets, when magnets are facing each other with attractive poles and with repulsive poles. This allows you to see different iron filing patterns (magnetic field patterns) for the different magnet orientations.

Detailed explanation-3: -Magnetic fields can be mapped out using small plotting compasses : place the plotting compass near the magnet on a piece of paper. mark the direction the compass needle points. move the plotting compass to many different positions in the magnetic field, marking the needle direction each time.

Detailed explanation-4: -Magnets have invisible magnetic field which attracts objects made of iron and nickel. Q. One end of a bar magnet is the north pole and the opposite is the south pole.